diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index abc337111eff..c12a05cbf268 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -558,6 +558,15 @@ config SOC_IMX7D help This enables support for Freescale i.MX7 Dual processor. +config SOC_IMX7ULP + bool "i.MX7ULP support" + select ARM_GIC + select CLKSRC_IMX_TPM + select HAVE_ARM_ARCH_TIMER + select PINCTRL_IMX7ULP + help + This enables support for Freescale i.MX7 Ultra Low Power processor. + config SOC_VF610 bool "Vybrid Family VF610 support" select ARM_GIC if ARCH_MULTI_V7 diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index bae179af21f6..8af2f7e91d13 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -83,6 +83,7 @@ obj-$(CONFIG_SOC_IMX6SX) += mach-imx6sx.o obj-$(CONFIG_SOC_IMX6UL) += mach-imx6ul.o obj-$(CONFIG_SOC_IMX7D_CA7) += mach-imx7d.o obj-$(CONFIG_SOC_IMX7D_CM4) += mach-imx7d-cm4.o +obj-$(CONFIG_SOC_IMX7ULP) += mach-imx7ulp.o pm-imx7ulp.o ifeq ($(CONFIG_SUSPEND),y) AFLAGS_suspend-imx6.o :=-Wa,-march=armv7-a diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h index 423dd76bb6b8..bc915e5b4d56 100644 --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -120,6 +120,7 @@ void imx6dl_pm_init(void); void imx6sl_pm_init(void); void imx6sx_pm_init(void); void imx6ul_pm_init(void); +void imx7ulp_pm_init(void); #ifdef CONFIG_PM void imx51_pm_init(void); diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c index c73593e09121..0b137eeffb61 100644 --- a/arch/arm/mach-imx/cpu.c +++ b/arch/arm/mach-imx/cpu.c @@ -145,6 +145,9 @@ struct device * __init imx_soc_device_init(void) case MXC_CPU_IMX7D: soc_id = "i.MX7D"; break; + case MXC_CPU_IMX7ULP: + soc_id = "i.MX7ULP"; + break; default: soc_id = "Unknown"; } diff --git a/arch/arm/mach-imx/mach-imx7ulp.c b/arch/arm/mach-imx/mach-imx7ulp.c new file mode 100644 index 000000000000..33937ebf66b5 --- /dev/null +++ b/arch/arm/mach-imx/mach-imx7ulp.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017-2018 NXP + * Author: Dong Aisheng + */ + +#include +#include +#include + +#include "common.h" +#include "hardware.h" + +static void __init imx7ulp_init_machine(void) +{ + imx7ulp_pm_init(); + + mxc_set_cpu_type(MXC_CPU_IMX7ULP); + of_platform_default_populate(NULL, NULL, imx_soc_device_init()); +} + +static const char *const imx7ulp_dt_compat[] __initconst = { + "fsl,imx7ulp", + NULL, +}; + +DT_MACHINE_START(IMX7ulp, "Freescale i.MX7ULP (Device Tree)") + .init_machine = imx7ulp_init_machine, + .dt_compat = imx7ulp_dt_compat, +MACHINE_END diff --git a/arch/arm/mach-imx/mxc.h b/arch/arm/mach-imx/mxc.h index b130a53ff62a..8e72d4e080af 100644 --- a/arch/arm/mach-imx/mxc.h +++ b/arch/arm/mach-imx/mxc.h @@ -44,6 +44,7 @@ #define MXC_CPU_IMX6ULZ 0x6b #define MXC_CPU_IMX6SLL 0x67 #define MXC_CPU_IMX7D 0x72 +#define MXC_CPU_IMX7ULP 0xff #define IMX_DDR_TYPE_LPDDR2 1 diff --git a/arch/arm/mach-imx/pm-imx7ulp.c b/arch/arm/mach-imx/pm-imx7ulp.c new file mode 100644 index 000000000000..cf6a380c2b8d --- /dev/null +++ b/arch/arm/mach-imx/pm-imx7ulp.c @@ -0,0 +1,29 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017-2018 NXP + * Author: Dong Aisheng + */ + +#include +#include +#include + +#define SMC_PMCTRL 0x10 +#define BP_PMCTRL_PSTOPO 16 +#define PSTOPO_PSTOP3 0x3 + +void __init imx7ulp_pm_init(void) +{ + struct device_node *np; + void __iomem *smc1_base; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx7ulp-smc1"); + smc1_base = of_iomap(np, 0); + WARN_ON(!smc1_base); + + /* Partial Stop mode 3 with system/bus clock enabled */ + writel_relaxed(PSTOPO_PSTOP3 << BP_PMCTRL_PSTOPO, + smc1_base + SMC_PMCTRL); + iounmap(smc1_base); +}